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'''Mitsubishi EVO VI-VIII''' (if I'm not mistaken, the primtrig/sectrig trigger pattern is unchanged from evo 1 through 9). MembersPage/Minopp/EVOIXMivec confirms EVO-9 has same trigger pattern. '''Stock trigger system is supported''' (race rules don't allow to modify it and mitsubishi EVO-s are popular racecars): To choose '''this type of trigger''', in http://www.vems.hu/vt/ '''primary trigger dialog page bottom choose the configlet "#Trigger settings for Mitsubishi Evo 6-7-8"''' (use same for EVO-9) There are plenty of engines running with this trigger (however, smooth installs are usually not reported, only when installer needs help): '''If ANYONE has sectrig and/or thirdtrig position measurements from VemsTune, please share''' (preferrably .vemslog file, but at least min-max values numerically. THANX) ---- '''Trigger description''' * '''HALL crank sensor''' 1 primtrig pulse every 180 crankdeg, '''primtrig rising edge is appr. 67-70 deg before TDC''' ** earlier it was cam-mounted, moving from cam to crank (in EVO6-7-8) is a precision improvement but doesn't change the main point * '''HALL cam sensor''' 1 short and 1 long sectrig pulse ** long sectrig falling edge to primary trigger rising -> 48deg (less than 84 crankdeg) ** short sectrig falling edge to primary trigger rising-> 132deg (more than 90 crankdeg) Here is the stock crank triggerwheel. It has two simple big 67 deg tooth, The '''primtrig rising edge is appr. 67-70 deg before TDC''': http://www.vems.hu/files/Fero/mitsubishiEVO/crank1.jpg http://www.vems.hu/files/Fero/mitsubishiEVO/crank2.jpg Cam trigger has a bigger and a smaller tooth, scopeshot: http://www.vems.hu/files/Fero/mitsubishiEVO/cam.jpg * Scope shot: http://www.vems.hu/files/Fero/mitsubishiEVO/4g63%20trigger%20pattern.gif * Erik Englund grinded off 1 tooth earlier, and used it as 4+1 trigger system. * V3 fw1.1.91 has firmware support with "Mitsubishi Evo 6-7-8" configlet * The triggering method is to check the delay degree from Secondary trigger falling edge to Primary trigger rising edge ** the measured degree must be in the configured range *** in Basic setup menu/ Secondary trigger settings / Minimum valid sectrig->primtrig angle for EVO & Maximum valid sectrig->primtrig angle for EVO *** Default value is min: 0 max: 90, so the ~47 degree measured will accepted, as can seen the picture below http://www.vems.hu/files/Fero/mitsubishiEVO/mitsubishi_evo_6-7-8_trigger.PNG ---- MembersPage/PhatBob - Rob Van Asbroeck has this engine running on simple trigger with one of the cam teeth removed ("c004 with camsync"). Triggerlog from evo3, one with rising, one with falling edge for cam sensor: http://media.vems.se/mitsu/ *I will try to measure the triggers with oscilloscope on a stock Evo-3 this upcoming weekend. / Erik Englund ---- '''Example setup''' *4 cyl, 2.0 4G63 engine *Vems V3.3 *wastedspark active coil *turbocharged *stepper IAC valve *4 bar MAP sensor -----
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